Page 38 - ICSE Chemistry 6
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• Copper is a good conductor of heat and electricity, and is used to make electrical wires.
• Tungsten, due to its high mel ng point, is used to make fi laments of light bulbs.
• Silver, pla num and gold are lustrous and a rac ve. These metals are used to make jewellery.
• Iron and steel are widely used in construc on of buildings. They are also used to make heavy tools
and machinery.
• Coal, wood and natural gas are used as fuels. They produce heat energy on burning.
• Utensils used for cooking are made from metals like steel, copper and aluminum as they are good
conductors of heat.
• Metals like iron and copper are sonorous, and hence used to make bells.
• Plas c is a bad conductor of heat and electricity, and is used to insulate wires. It is also used to
make non-s ck cookwares.
• Carbon dioxide is used in fi re ex nguishers as it does not support combus on.
• Sand is used in the prepara on of glass.
• Chlorine is used as a disinfectant.
• Argon is used in light bulbs as it does not react with metals at high temperature.
• Graphite is used to make lead of the pencils. It is also used to prepare lubricants.
• Diamond is a form of carbon. It is the hardest naturally occurring substance. It is considered as the
most precious gem. Impure diamond is used to cut glass.
Activity 2.2
Aim: To create a presenta on on carbon and its compounds
• Use the Internet to fi nd diff erent compounds of carbon and their uses. Using this informa on, create
a PowerPoint presenta on on the same topic. Insert related images and videos.
• List at least 10 uses of carbon and its compounds in your presenta on.
• Format the presenta on as per your choice.
Take a Break!
A. Name the following.
1. Filament of a light bulb is made of this ____________________________
2. Hardest naturally occurring substance ____________________________
3. A sonorous metal ____________________________
B. Write True (T) or False (F).
1. Copper is used to make electrical wires. ______________
2. Plas c is used in the prepara on of sand. ______________
3. Argon reacts with metals at low temperature. ______________
4. Graphite is used to make lead pencils. ______________
5. Carbon dioxide is used in fi re ex nguishers. ______________
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